Dynamic Uplink Control Information Transmission in 5G Terminals
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Solution Overview
Problem
The existing 5G communication systems face challenges in configuring control information for uplink transmission, particularly in high-frequency bands, which limits low communication latency and flexibility in scheduler operations due to fixed subframe configurations and inefficient beamforming methods.
Innovation Solution
A method for a terminal to receive downlink control information, identify whether it is uplink or downlink, and transmit uplink control information on either an uplink control channel or data channel, while a base station generates and transmits downlink control information and receives uplink control information based on identification, allowing dynamic subframe configuration and flexible scheduler operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If fixed subframe configuration is used for uplink control information transmission, then system stability is maintained, but communication latency increases and scheduler flexibility is reduced
Solution Approach 1:
The patent implements dynamic subframe configuration where the base station can dynamically indicate whether uplink control information should be transmitted on the physical uplink control channel or the physical uplink shared channel. This dynamic switching mechanism allows the system to adapt transmission resources based on current traffic conditions and scheduling requirements, thereby reducing communication latency while maintaining system stability through controlled flexibility.
2Productivity
If uplink control information is transmitted on dedicated control channel, then transmission reliability is ensured, but resource utilization efficiency decreases
Solution Approach 1:
The patent enables the physical uplink shared channel to serve dual purposes: transmitting both uplink data and uplink control information when dynamically indicated by the base station. This multi-functionality approach allows control information to be transmitted on data channels during periods when control channel resources are scarce or when data transmission is prioritized, thereby improving overall resource utilization efficiency while maintaining transmission reliability through base station-controlled resource allocation.
Data Source
AI summary
Disclosed is a 5G or pre-5G communication system for supporting a data transmission rate higher than that of a 4G communication system such as LTE. According to the present disclosure, a method of a terminal in a wireless communication system comprises the steps of: receiving downlink control information (DCI); confirming whether the DCI is uplink DCI for an uplink or downlink DCI for a downlink; and transmitting, through an uplink control channel or an uplink data channel, uplink control information (UCI) according to the confirmation result.